Hormones are a group of chemicals released by exocrine glands
These hormones are directly secreted into bloodstream from where they reach the site.
The correct answer is:
A. Photosynthetic pigments absorb energy from light.
Answer
Hi,
A. Radioactive markers
Explanation
Hershey and Chase used specific radioisotopes to form a trace of the two important components of the virus in its life cycle. The 32P was used to identify the DNA while the 35s labeled the proteins.DNA strands have a sugar phosphate where as protein contains sulfur.
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The energy of moving matter is called kinetic energy. Scientists think that the particles of all matter are in constant motion. In other words, the particles of matter have kinetic energy. The theory that all matter consists of constantly moving particles is called the kinetic theory of matter.
- If particles do not have enough kinetic energy to overcome the force of attraction between them, matter exists as a solid.
- If particles have enough kinetic energy to partly overcome the force of attraction between them, matter exists as a liquid.
- If particles have enough kinetic energy to completely overcome the force of attraction between them, matter exists as a gas.
Answer:
lowering the activation energy needed for the reaction to start
